Any chance you have a replacement part? I compared you 39-253 but the screw hole pattern is different and the 4 7/8" arm is about 1/2" too long. Lemme know, thanks!
Bob from SWISCO responded:
February 18, 2019
Thanks for posting. Take a look at our 39-031 & 39-032 EntryGard Dual Arm Operators. Compare the link arm dimensions--I think you'll find this is closer to your old part. Let us know what you think.